作者：未知 来源：月光软件站 加入时间：2005-2-28　月光软件站

此类实现对Ini文件的简单封装
可以提取文件中所有Sections 及Section中所对应的各个项

using System;
using System.Text;
using System.Runtime.InteropServices;
using System.Collections;

namespace TestIniFile
{
 /// <summary>
 /// IniFile 的摘要说明。
 /// </summary>
 public class IniFile
 {
  [DllImport("kernel32")]
  private static extern long WritePrivateProfileString(string section,string key,string val,string filePath);
  [DllImport("kernel32")]
  private static extern int GetPrivateProfileString(string section,string key,string def,StringBuilder retVal,int size,string filePath);
  [DllImport("kernel32")]
  private static extern int GetPrivateProfileString(string section,string key,string def,byte[] retVal,int size,string filePath);

  public IniFile()
  {
   
  }
  public IniFile(string fileName)
  {
   iniFileName = fileName;
   sectionArray = new  ArrayList();
   keyArray = new ArrayList();
  }

  //读取所有Sections并返回
  public void ReadSections()
  {
   byte[] byteBuffer = new byte[11024];//设定Buffer长度
   string tmpStr = null;
   if (GetPrivateProfileString(null, null, null, byteBuffer, 1024, iniFileName) > 0)
   {
    foreach(byte abyte in byteBuffer)
    {
     if  (abyte == 0)
     {
      if (tmpStr == null)
      {
       break;
      }
      else
      {
       sectionArray.Add(tmpStr);
       tmpStr  = null;
      }
     }
     else
     {
      tmpStr = tmpStr + Convert.ToChar(abyte);
     }
    }           
   }
  }
  //读取某Section中Key的值的列表
  public void ReadSectionKeys(string sectionName)
  {
   keyArray.Clear();
   byte[] byteBuffer = new byte[11024];//设定Buffer长度
   string tmpStr = null;
   if (GetPrivateProfileString(sectionName, null, null, byteBuffer, 1024, iniFileName) > 0)
   {
    
    foreach(byte abyte in byteBuffer)
    {
     if  (abyte == 0)
     {
      if (tmpStr == null)
      {
       break;
      }
      else
      {
       keyArray.Add(tmpStr);
       tmpStr  = null;
      }
     }
     else
     {
      tmpStr = tmpStr + Convert.ToChar(abyte);
     }
    }           
   }
  }
  //判定Section是否存在
  public bool SectionExists(string sectionName)
  {   
   if (sectionArray.Count <= 0)
   {
    ReadSections();
   }
   foreach(object sectionList in sectionArray)
   {
    if ((string)sectionList == sectionName)
    {
     return true;     
    }
   }
   return false;
  }
  //判定Section中Key是否存在
  public bool KeyExists(string sectionName, string keyName)
  {   
   if (sectionArray.Count <= 0)
   {
    ReadSections();
   }
   foreach(object sectionList in sectionArray)
   {
    if ((string)sectionList == sectionName)
    {
     foreach(object keyList in keyArray)
     {
      if ((string)keyList == keyName)
      {
       return true;
      }
     }
    }
   }
   return false;
  }

  //返回Section列表
  public ArrayList GetSectionValues()
  {
   if (sectionArray.Count <=0 )
   {
    ReadSections();
   }
   return (ArrayList)sectionArray.Clone();
  }

  //返回Section中Key的列表
  public ArrayList GetKeyValues(string sectionName)
  {
   ReadSectionKeys(sectionName);
   return (ArrayList)keyArray.Clone();
  }

  //读入字符串型数据
  public string ReadString(string sectionName, string keyName, string defaultVal)
  {
   StringBuilder retStr = new StringBuilder(1024);
   if (GetPrivateProfileString(sectionName, keyName, defaultVal, retStr, 1024, iniFileName) != 0)
   {
    return retStr.ToString();
   }
   else
   {
    return defaultVal;
   }
  }

  //写入字符串型数据
  public bool WriteString(string sectionName, string keyName, string setVal)
  {
   if (WritePrivateProfileString(sectionName, keyName,setVal, iniFileName) != 0)
   {
    return true;
   }
   else
   {
    return false;
   }
  }

  //读取数字型数据
  public int ReadInteger(string sectionName, string keyName, int defaultVal)
  {
   return Convert.ToInt32(ReadString(sectionName, keyName, Convert.ToString(defaultVal)));
  }

  //写入数字型数据
  public bool WriteInteger(string sectionName, string keyName, int setVal)
  {
   return WriteString(sectionName, keyName, Convert.ToString(setVal)) ;
  }

  //读取bool型数据
  public bool ReadBool(string sectionName, string keyName, bool defaultVal)
  {
   return Convert.ToBoolean(ReadString(sectionName, keyName, Convert.ToString(defaultVal)));
  }

  //写入bool型数据
  public bool WriteBool(string sectionName, string keyName, bool setVal)
  {
   return WriteString(sectionName, keyName, Convert.ToString(setVal)) ;
  }

  //读取Double型数据
  public double ReadDouble(string sectionName, string keyName, double defaultVal)
  {
   return Convert.ToDouble(ReadString(sectionName, keyName, Convert.ToString(defaultVal)));
  }

  //写入Float型数据
  public bool WriteDouble(string sectionName, string keyName, double setVal)
  {
   return WriteString(sectionName, keyName, Convert.ToString(setVal)) ;
  }

  //读取Datetime型数据
  public DateTime ReadDatetime(string sectionName, string keyName, DateTime defaultVal)
  {
   return Convert.ToDateTime(ReadString(sectionName, keyName, Convert.ToString(defaultVal)));
  }

  //写入Datetime型数据
  public bool WriteDatetime(string sectionName, string keyName, DateTime setVal)
  {
   return WriteString(sectionName, keyName, Convert.ToString(setVal)) ;
  }

  //删除所有Section
  public bool DeleteSection(string sectionName)
  {
   if (WritePrivateProfileString(sectionName, null, null, iniFileName) != 0)
   {
    return true;
   }
   else
   {
    return false;
   }

  }

  //删除所有Section中的Key
  public bool DeleteKey(string sectionName, string KeyName)
  {
   if (WritePrivateProfileString(sectionName, KeyName, null, iniFileName) != 0)
   {
    return true;
   }
   else
   {
    return false;
   }
  }
  //override tostring
  public override string ToString()
  {
   return "This is IniFile Class";
  }

  private string iniFileName;
  private ArrayList sectionArray;
  private ArrayList keyArray;
 }
}

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